北京平谷金矿区及周边尾矿库土壤中汞的污染分布对比及风险评价  

Distribution comparison and risk assessment of mercury pollution in the gold mines and surrounding tailings ponds soil in Pinggu District,Beijing

作　　者：蒋玉琢 王雪梅 周颖 邢宇鑫 赵云峰[3] 季宏兵 JIANG Yuzhuo;WANG Xuemei;ZHOU Ying;XING Yuxin;ZHAO Yunfeng;JI Hongbing(Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollution,School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083;China Geological Survey Oil and Gas Resources Survey Center,Beijing 100083;Beijing Geological Engineering Design and Research Institute,Beijing 101500;Beijing Municipal Key Laboratory of Resource Environment and GIS,College of Resource Environment and Tourism,Capital Normal University,Beijing 100048)

机构地区：[1]北京科技大学能源与环境工程学院,北京市资源导向型工业污染治理重点实验室,北京100083 [2]中国地质调查油气资源调查中心,北京100083 [3]北京市地质工程设计研究院,北京101500 [4]首都师范大学资源环境与旅游学院,北京市资源环境与GIS重点实验室,北京100048

出　　处：《环境污染与防治》2020年第11期1392-1397,共6页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.41473122、No.41173113)。

摘　　要：对北京平谷金矿区及周边尾矿库土壤进行采样,分析土壤样品的理化性质及总汞含量,对土壤样品中汞的不同形态进行相关性分析,并对土壤汞污染进行生态风险评价。结果表明,金矿区土壤汞污染相对更加严重,但个别尾矿库土壤出现汞污染异常点,因此对尾矿库周围土壤的监测和治理仍十分必要。与金矿区土壤相比,尾矿库土壤由于长期静置堆存,土壤矿化程度增强,生物稳定性提高。尾矿库的汞污染潜在生态风险指数总体稍低于金矿区,但尾矿库3个异常点位呈中度风险,应警惕尾矿库矿渣长期堆存后产生的渗滤液向土壤中扩散造成严重的汞污染。The soil samples were collected in Beijing Pinggu gold mining area and surrounding tailings ponds,the physic-chemical properties and total mercury content of the soil samples were detected.The correlation of the different mercury forms and soil property index was analyzed,and the ecological risk assessment of soil mercury pollution was carried out.The results showed that soil mercury pollution in gold mining areas was relatively more serious,but there were abnormal points of mercury pollution in the soil of individual tailings ponds,so it was still necessary to monitor and control the soil around the tailings ponds.Compared with the soil in the gold mining area,the soil in the tailings pond had been stored for a long time so that its mineralization degree and biological stability increased.The potential ecological risk index of mercury pollution in the tailings pond was slightly lower than that of the gold mining area,but the three abnormal points of the tailings pond present a moderate ecological risk.It should be vigilant that the leachate produced by the long-term stored tailings pond slag would spread and further causes serious mercury pollution in local area.

关 键 词：汞 金矿区 尾矿库 相关性分析 风险评价 

分 类 号：X53[环境科学与工程—环境工程] X820.4